Renesas rl78 User Manual
RL78/G1A
CHAPTER 29 ELECTRICAL SPECIFICATIONS (T
A
=
−40 to +85°C)
R01UH0305EJ0200 Rev.2.00
883
Jul 04, 2013
(8) Communication at different potential (1.8V, 2.5 V) (CSI mode) (master mode, SCKp... internal clock output) (1/2)
(T
A
=
−40 to +85°C, 1.8 V ≤ EV
DD0
≤ V
DD
≤ 3.6 V, V
SS
= EV
SS0
= 0 V)
HS
Note 1
LS
Note 2
LV
Note 3
Parameter Symbol
Conditions
MIN.
MAX.
MIN.
MAX. MIN. MAX.
Unit
2.7 V
≤ EV
DD0
≤ 3.6 V,
2.3 V
≤ V
b
≤ 2.7 V,
C
b
= 30 pF, R
b
= 2.7 k
Ω
t
KCY1
≥ 4/f
CLK
500 1150
1150 ns
SCKp cycle time
t
KCY1
1.8 V
≤ EV
DD0
< 3.3 V,
1.6 V
≤ V
b
≤ 2.0 V
Note 4
,
C
b
= 30 pF, R
b
= 5.5 k
Ω
t
KCY1
≥ 4/f
CLK
1150
1150
1150
ns
2.7 V
≤ EV
DD0
≤ 3.6 V, 2.3 V ≤ V
b
≤ 2.7 V,
C
b
= 30 pF, R
b
= 2.7 k
Ω
t
KCY1
/2
−
170
t
KCY1
/2
−
170
t
KCY1
/2
−
170
ns
SCKp high-level width t
KH1
1.8 V
≤ EV
DD0
< 3.3 V, 1.6 V
≤ V
b
≤ 2.0 V
Note 4
,
C
b
= 30 pF, R
b
= 5.5 k
Ω
t
KCY1
/2
−
458
t
KCY1
/2
−
458
t
KCY1
/2
−
458
ns
2.7 V
≤ EV
DD0
≤ 3.6 V, 2.3 V ≤ V
b
≤ 2.7 V,
C
b
= 30 pF, R
b
= 2.7 k
Ω
t
KCY1
/2
−
18
t
KCY1
/2
−
50
t
KCY1
/2
−
50
ns
SCKp low-level width t
KL1
1.8 V
≤ EV
DD0
< 3.3 V, 1.6 V
≤ V
b
≤ 2.0 V
Note 4
,
C
b
= 30 pF, R
b
= 5.5 k
Ω
t
KCY1
/2
−
50
t
KCY1
/2
−
50
t
KCY1
/2
−
50
ns
Notes 1. HS is condition of HS (high-speed main) mode.
2. LS is condition of LS (low-speed main) mode.
3. LV is condition of LV (low-voltage main) mode.
4.
Use it with EV
DD0
≥ V
b
.
Caution Select the TTL input buffer for the SIp pin and the N-ch open drain output (V
DD
tolerance (When 25- to
48-pin products)/EV
DD
tolerance (When 64-pin products)) mode for the SOp pin and SCKp pin by using
port input mode register g (PIMg) and port output mode register g (POMg). For V
IH
and V
IL
, see the DC
characteristics with TTL input buffer selected.
Remarks 1. R
b
[
Ω]: Communication line (SCKp, SOp) pull-up resistance, C
b
[F]: Communication line (SCKp, SOp) load
capacitance, V
b
[V]: Communication line voltage
2. p: CSI number (p = 00, 10, 20), m: Unit number , n: Channel number (mn = 00, 02, 10),
g: PIM and POM number (g = 0, 1)
3.
CSI01, CSI11, and CSI21 cannot communicate at different potential. Use other CSI for communication at
different potential.
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